Improvement in stove-grates



D. HATHAWAY Stove Grate.

Pat ented Sept. 13. 1864.

' UNITED STATES PATENT OFFICE.

DAVID HATHAWAY, OF TROY, NEW YORK.

lM PROVEMENT IN STOVE-GRATES.

Specification forming part of Letters Patent No. 414, [88, datedSeptember 13, 1864.

.To all whom it may concern.-

Be it known that 1, DAVID HATHAWAY, of the city of Troy, in the countyof Itensselaer and State of New York, have invented certain new anduseful Improvements in Stove-Grates,

the same being illustrated and explained in the following specification,reference being made to the accompanying drawings.

A, Figure 1, represents the stationary frame, which may be placed in thefire-chamber of stoves, furnaces, &c., and secured in a horizontalposition in the usual manner.

N, Fig. 2,is a tilting frame revolving on the journals L and R in thestationary frame, Fig. 1, the journal R passing through the loop P, thejournal L resting in the socket n, the corner c resting on the step cl.The bar Q is deflected so that its weight may cause the tiltin g frameto rest firmly on the said step, preventing the frame from tilting atimproper times.

S, Fig. 3, is one of two similar sliding pieces or system of bars whichconstitute the bed of the grate, upon which fuel is to be placed. Thesesliding bars are to be placed and op erated in the tilting frame, ashereinafter described.

Fig. 4 is a general presentation of the several parts in their relativeposition, no attempt being made to exhibit the under parts, which mightbe partially seen through the interstices, said parts being properlydelineated elsewhere. Fig.5 is a transverse section on the line B 0,Fig. 4,fbeing a section through the bar Q, Fig. Fig. 6 is a longitudinalsection on the line E M, Fig. at. b is a section through the key F atthe parthavingthe studs a a upon it, showing the position of the studsin relation to the ledge 0, which is more clearly shown at 0, Fig. 3. 51T are sections through the bearing-arms 3 T of the tilting frame N, Fig.2. U U are sections through the caps U U of said tilting frame. J V aresections through the end bars, J V, of the sliding bed S, Fig. 3. Z Zare sections through the ends Z Z of the stationary frame. & &, &c., aresections through the transverse bars of the sliding bed S.

F, Fig. 7 is a key by which the grate is operated, consisting of thecylindrical part K, the semicylindrical part WV, (the cylinder beingdivided by a horizontal plane through its axis,) the cross-head Y, thepivot X, and the studs a a z t, On the under side of the key, near thecross-head, is a knob (not seen in the drawings) acting against the loopP, Fig. 1, preventing the key from working too far through the loop.

Fig. 8 is a wrench, which, by being placed on the flattened projectingend of the key in a horizontal position, the bed of the grate may bemade to vibrate in such a manner as to sift the ashes from burning fuel.By placing the wrench on the key in a vertical position the bed of thegrate may be tilted so as to dis charge the remains of exhausted fuel.

In order to place the several parts in their operative position, putthesliding piece S, Fig. 3, into the tilting frame by placing the end Jupon the bearing-arm y and sliding it under the cap U far enough toadmit of the other end falling upon the bearing-arm T, sliding it backso that the ends may be about even with the outer edges of the caps U U,as shown in Fig. 6. Place the other sliding piece into the tilting framein the same way. The journal It of the tilting frame is semicylindrical,of the same diameter as that part of the key marked W, Fig. 7. Place thekey in connection with the tilting frame by placing the pivot X into thesocket g, which will bring the studs a a one on each side of the ledge0, as shown at Fig. 6. While the sliding bed is being actuated for thepurpose of sit'tin g ashes from burning fuel, the studs have a slidingmotion along the sides of the ledge 0. The ends of the key, which carrythe studs, also the two sliding pieces, marked S, are counterparts.

Having arranged the sliding bed, the tilting frame, and the key in theirrelative positions, place the whole into the stationary frame A, Fig. 1,by placing that part of the key marked K through the loop P, so that thejournal L of the tilting frame shall fall into the socket n, securingthe same in its place by the cap and screw, Fig. 9, as at h, Fig. 4.

1f the key be made to oscillate on its pivot X, a sliding reciprocatingmotion in the direc tion of their length will be given to the slidingbed-pieces S by means of the studs (1 a i i acting on the ledges 0 0.While this operation is being performed the ends of the crosshead of thekey strike alternately against the bearing-arm T, Fig. 2, preventing thesliding parts from being moved far enough to be displaced from thetilting frame, which is at rest during this operation.

In Fig. 4 the axis of the hey is represented as being in the axis of thetilting frame. The grate may be best tilted when in this position, butmay be done when the key is in any other position sufiicient room beingmade for that purpose in the loop 1 Fig. 1.

The grate is tilted by revolving the key on its axis in the loop P,whichcarries the tilting frame and sliding bed with it in the directionindicated by the curved broken lines, Figs. 2 and 4.

In this arrangement for a stove-grate, what I claim as my invention is-The combination of the revolvingoscillatory key F with the tilting frameN, as held in connection by the loop P, constructed and arranged asdescribed and represented, for the purpose set forth.

Witnesses: DAVID HAT HAVVAY.

J. WILLIAM GAY, THEODORE B. WAY.

